Not converting to typst math when equation label is included

[jzelner]

Bug description

When I run this equation from qmd -> typst -> pdf, I get the expected behavior when omitting an equation label:

Here is the original TeX math in Quarto:

And this is the correctly generated typst math:

Now, re-adding the equation label (this compiles properly to PDF using xelatex and to HTML):

I get the raw TeX math in the typst intermediate document and it will not compile:

Steps to reproduce

$$
\begin{aligned}
\frac{dS_1}{dt} &= -\frac{\rho \beta S_1(c_{11} I_1 + c_{12} I_2)}{N} \
\frac{dS_2}{dt} &= -\frac{\beta S_2(c_{12} I_1 + c_{22} I_2)}{N} \
\frac{dI_1}{dt} &= \frac{ \rho \beta S_1(c_{11} I_1 + c_{12} I_2)}{N} - \gamma I_1 \
\frac{dI_2}{dt} &= \frac{\beta S_2(c_{12} I_1 + c_{22} I_2)}{N} - \gamma I_2 \
\frac{dR_1}{dt} &= \gamma I_1 \
\frac{dR_2}{dt} &= \gamma I_2
\end{aligned}
$$ {#eq-model}

Expected behavior

No response

Actual behavior

No response

Your environment

No response

Quarto check output

No response

[mcanouil]

Thanks for the report.

Which version (I assume one of the many 1.4 pre-releases) of Quarto are you using?
Note that the things we ask in the issue template is not to bother users, but to help us help users faster.

For instance, a minimal reproducible example is in your case the following:

---
format: typst
---

$$
\begin{aligned}
\frac{dS_1}{dt} &= -\frac{\rho \beta S_1(c_{11} I_1 + c_{12} I_2)}{N} \\
\frac{dS_2}{dt} &= -\frac{\beta S_2(c_{12} I_1 + c_{22} I_2)}{N} \\
\frac{dI_1}{dt} &= \frac{ \rho \beta S_1(c_{11} I_1 + c_{12} I_2)}{N} - \gamma I_1 \\
\frac{dI_2}{dt} &= \frac{\beta S_2(c_{12} I_1 + c_{22} I_2)}{N} - \gamma I_2 \\
\frac{dR_1}{dt} &= \gamma I_1 \\
\frac{dR_2}{dt} &= \gamma I_2
\end{aligned}
$$ {#eq-model}

Side note: @jzelner You'll very likely want to use \\ not one unless you want all your equations in one line, but maybe those got escaped because you did not use code blocks.

[cscheid]

I can repro this locally, FWIW. It's a bug in how we're annotating equations. The code we have only works for inline equations, and not block equations.

[jzelner]

This one is almost working, but in a document with multiple numbered equations, quarto is emitting the numbered reference rather than the reference style as required by typst. For example, here is an equation from my document which was assigned the number 5:

This won't compile using typst compile, but if I find and replace all instances a numbered reference > 1 using the regex \(\d\)with (1):

It then compiles and gives the appropriate output, correctly numbered, below:

So, basically it looks like quarto is doing a bit too much here and just needs to supply the numbering style rather than the number itself to typst. Thanks!

[cscheid]

I misinterpreted the behavior of the parameter 🤦. This is fixed on main now. Thanks for following up!